A third possibility is that, so long as only a few students leave a public school with scholarships, the program could have effects on resources. (educationnext.org)
Yes, even if students leave a public school system, fixed costs mean vouchers increase, not decrease expenses. (tnedreport.com)
The gains occur immediately, before any students leave the public schools with a scholarship, implying that competitive threats are responsible for at least some of the estimated effects. (educationnext.org)